Special Features:

Items are being coded as critical to insure source inspection will be performed at the point of manufacture, prior to material receipt by the us navy or other dod components. These items are piece parts or end items in support of vital military hardware necessary to sustain the successful mission of the ships, submarines, and shore stations of the us navy. Critical features including, but not limited to, dimensions, tolerances/clearances, electronic characteristics, and metallurgical properties will bespecified for government q ar (quality assurance representatives) to insure the highest possible degree of quality and reliability of these parts being delivered under navicp contracts

Properties:

An item which permits a transmitter and receiver to operate on the same frequency with a single transmission line and/or antenna. It effects a mismatch in the receiver section when the transmitter is operating and restores matching when the transmitter is quiescent. See also blanker (as modified); and diplexer.